body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #0e7caf;
}

p{
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    font-family: "微软雅黑";
    font-size: 24px;
    padding: 6px;
}


form{
    width: 482px;
    height: 340px;
    background-image: url("../images/login_bg01.gif");
    position: relative;
    left: 50%;
    top: 50%;
    margin:  170px 0 0 -242px;
}

form label:first-child{
    margin-top: 100px;
}

form label input.announ{
    width: 60px;
}


form label,button{
    margin: 15px 0 0 130px;
}

form button {
    display: block;
    width: 249px;
}




